Evidence map›Paper›PMID 19164283›Full record

ArticleThe Journal of biological chemistry2009

Sp1 and AP-1 regulate expression of the human gene VIL2 in esophageal carcinoma cells.

Shu-Ying Gao, En-Min Li, Lei Cui, Xiao-Feng Lu, Ling-Ying Meng, Hua-Min Yuan, Jian-Jun Xie, Ze-Peng Du, Jian-Xin Pang, Li-Yan Xu

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 2 pooled it
2.3field-weighted citation impact, top 12% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

31 citing papers in PubMed, 2 syntheses or guidelines pooled it, 60 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 3 institutions in 1 country.

Shu-Ying GaoDepartment of Biochemistry and Molecular Biology, Shantou University, Shantou, China.
En-Min Li
Lei Cui
Xiao-Feng Lu
Ling-Ying Meng
Hua-Min Yuan
Jian-Jun Xie
Ze-Peng Du
Jian-Xin Pang
Li-Yan Xu
Shantou University · CNShantou University Medical College · CNSouthern Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Ezrin, encoded by VIL2, is a membrane-cytoskeletal linker protein that has been suggested to be involved in tumorigenesis. Ezrin expression in esophageal squamous cell carcinoma (ESCC) was described recently, but its clinical significance and the molecular mechanism underlying its regulated expression remain unclear. Thus, we retrospectively evaluated ezrin expression by immunohistochemistry in a tissue microarray representing 193 ESCCs. Ezrin overexpression in 90 of 193 tumors (46.6%) was associated with poor survival (p = 0.048). We then explored the mechanism by which ezrin expression is controlled in ESCC by assessing the transcriptional regulatory regions of human VIL2 by fusing deletions or site-directed mutants of the 5'-flanking region of the gene to a luciferase reporter. We found that the region -87/-32 containing consensus Sp1 (-75/-69) and AP-1 (-64/-58) binding sites is crucial for VIL2 promoter activity in esophageal carcinoma cells (EC109) derived from ESCC. AP-1 is comprised of c-Jun and c-Fos. Electrophoretic mobility shift and chromatin immunoprecipitation experiments demonstrated that Sp1 and c-Jun bound specifically to their respective binding sites within the VIL2 promoter. In addition, transient expression of Sp1, c-Jun, or c-Fos increased ezrin expression and VIL2 promoter activity. Use of selective inhibitors revealed that VIL2 transactivation required the MEK1/2 signal transduction pathway but not JNK or p38 MAPK. Taken together, we propose a possible signal transduction pathway whereby MEK1/2 phosphorylates ERK1/2, which phosphorylates Sp1 and AP-1 that in turn bind to their respective binding sites to regulate the expression of human VIL2 in ESCC cells.

Indexed as

Gene Expression Regulation, NeoplasticAdultAgedCell Line, TumorCytoskeletal ProteinsDisease-Free SurvivalEsophageal NeoplasmsEzrinFemaleHumansMaleMAP Kinase Kinase 1MAP Kinase Kinase 2MAP Kinase Kinase 4MAP Kinase Signaling SystemMicroarray AnalysisCytoskeletal ProteinsEzrinMAP2K1 protein, humanMAP2K2 protein, humanMAP Kinase Kinase 1MAP Kinase Kinase 2MAP Kinase Kinase 4Mitogen-Activated Protein Kinase 1Mitogen-Activated Protein Kinase 3p38 Mitogen-Activated Protein KinasesProtein Kinase InhibitorsProto-Oncogene Proteins c-fynProto-Oncogene Proteins c-junSp1 Transcription FactorTranscription Factor AP-1

Identifiers

PMID19164283
PMCPMC2658093
OpenAlexW2159352516

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.